Journal of Electrical Systems and Information Technology

Table 3 Line Stability Index Result for 56-bus Nigerian National Grid

Line no	From bus	To bus	Voltage Stability Index
1	12	1	0.05681
2	3	12	0.02865
3	15	23	0.01289
4	3	30	0.02307
5	10	4	0.02224
6	10	13	0.02249
7	14	13	0.00476
8	2	11	0.19739
9	6	17	0.06288
10	19	6	0.12533
11	24	2	0.03591
12	25	5	0.01360
13	24	5	0.00406
14	9	29	0.17578
15	33	14	0.03538
16	34	33	0.05227
17	30	32	0.00141
18	28	3	0.00582
19	36	37	0.15673
20	32	36	0.04459
21	29	41	0.01042
22	42	17	0.01044
23	43	13	0.13231
24	22	19	0.03231
25	2	48	0.01293
26	7	48	0.07025
27	50	2	0.18203
28	30	10	0.00321
29	2	25	0.07360
30	51	7	0.03922
31	51	3	0.04665
32	15	54	0.00437
33	2	15	0.22900
34	29	50	0.16311
35	30	36	0.09802
36	7	29	0.25073
37	29	8	0.00522
38	42	44	0.23956
39	43	42	0.01570
40	3	7	0.07358
41	45	44	0.01492
42	52	14	0.00276
43	52	53	0.00356
44	7	9	0.12041
45	9	55	0.02881
46	29	55	0.24796
47	56	45	0.05943
48	22	44	0.10939
49	44	56	0.30368
50	2	6	0.14534
51	37	11	0.03440
52	15	29	0.01511
53	29	54	0.01335
54	16	15	0.09910
55	39	19	0.05981
56	40	55	0.01816
57	46	56	0.05454
58	47	48	0.08676
59	49	50	0.01375
60	26	12	0.00754
61	27	28	0.12140
62	21	22	0.00292
63	31	30	0.04632
64	20	24	0.00527
65	18	25	0.03002
66	35	11	0.03323
67	38	6	0.03337